Tension device



Aug. 2, 1927. M. .Bi GROUT 1,637,483

TENSION DEVI CE Y t i, 7*;

.v 'iq/KIM M u l jpllli Aug. 2 1927, 1,637,483

v M. B. GROUT TENSION DEVICE Filed Feb. 5. 1925 s suena-sheet 5 LIL) Patented Aug. 2,` 1927.

UNITED STATES n 1,637,483 PATENT OFFICE- MARTINE GROUT, or CHICAGO,y ILLINOIS, AssIGNOE tro KELLoeel SWITCIIBOARD l AND sUPrLY coivII'aNY, or CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

TENSION DEVICE.

Applicationfaied February 5, 1925. f rserali No. 6,959.

My invent-ioni relatesto winding machines, and has to do more particularly with winding machines of the class `which are used Lfor winding coils. The main object of my in# vention to provide an improved tension device for Winding machines in which coils made from Vwire may be Wound at high speed and they traveling strand of wire, which is being wound on the coil, is kept,.substan tially, at a constant tension.

In winding .coils, it is important to keep the tension j, on the ywire as nearly constant as possible throughout the Windingjoperation.. This is especially true when small 3 coils, such as transformer andy receiver coils,

are being. wound with line gauge wire. `nl' suitable winding machine incombination with the tension device of my invention is provided with a winding 'mandrel or chuck suitably operated by motor driven means and the only connection',.between the winding i'riandrel and the tension device7 which carries the supply spool, is the traveling strand of Wire. yvision of a new and improvedtension device, for the purpose of controlling the tension of the wire or ,strand being Wound. rThis controlling action is exercised at two points; namely, at the winding point of the mandrel and at the point .ofsupply of the strand.y

My tension device is adaptedl for use not only with manually controlled `winding machines ing machines. n y A feature of my invention is the provision of a sensitive take up device in which every variation in the ratefof travel of the strand atthe point of winding is instantly respon-y sive to every decrease or increase' of travel of the strand and will effect the corresponding necessary variations in the speed kof travel of the supply means through the actuation of a novel combined clutchand `braking means. n i i f Another feature of my invention `is ythe application yof a toggle joint inr combination with novel adjusting` ineanswliereby the take up'device may be adjusted rso that an approximately constant tension is placed upon thel strand of kwire in itsy travel frein the source of supply to the point of Winding]l n Still another feature of my invention is the provision of adjust-able means for one arm of the ,toggle vjoint whereby a slight rmovement of the control. arm will cause au An Object of my invention is the `pr`O-k but also with automatically controlled wind'-k instantaneous operation ofthe combined clutch and braking means. i i A further feature of my invention resides in` the rfact that the spring tension on the 'control arm of my device :is piacticallyconr stant regardless of the position it may be in.

y.et still further feature of my inventionr resides in the fact that the spring means performs the' function of a back stopkfor the controly arm kwhen it recedes to itsvertical position. .n I y Another feature of my invention is the provisionof a guide for the traveling strand of wireat the source of supply of the wire.

linotherffeature of my invention is the provision of an .improved adjustable tension for the brake mechanism of the tensionr device ywhereby the amount of pressure exerted ay the brake drum on the brake disk may be micrometrieally ladjusted so as to make the tension device universally applicable for all gauges of wire. This adjustable tension for Ithe brake mechanism provided means whereby only a slight pull 'when placedy on the source of supply will causethe brake means to release yor it may be adjusted so that a strong pull may be placed on the brake means v before the brake means releases. f

)ther features of my invention not herefy inbefOi-e ref-erred to will ybe hereinafterdescribed in the ensuing specilication and claims. f

'For a more complete understanding of my invention, reference may be had'to the accoin panying drawings, in which like reference are characters in the several views of the drawkings denote like parts,A and in which:

` Fig. l is a side elevation of the tension device of my'invention; *o Fig. 2 is a plan view of Fig. l;

kFiga?) is a sectional View along ,3 3 of Figui; y `yn Fig. al. is a left end view of Fig. l; "F.ig. ois a right end view of Fig. 1;

n Fig. 6 isa ysectional view along the vline 6 6' of Fig. l;

Fig. 7 isa sectional view along the line 7--7 iin' Fig. l; i A Figzf 'isla side elevation of the; device of my invention illustrating it iii-association witha coil chuck and its power driven means.

the line referring now more in detail to my inven-v tension device is supported. sleevev 4t is inserted in a suitable orifice in the frame 2 and held in place by any suitable means suoli as a set screw 42.

A yspool holder S comprises a shaftV 5 which is rotatably supported as a whole by the bearings 6 and 7. The bearings 6 and 7, which rotatably support. they spool holder S, are of the well known ball bea-ring type, and consist of the usual ball races or cups 8, cones 9 and 10, and ball-bearings 6 and The sleeve 4 is provided with annular recesses in its respective ends which are adapted to receive'the ball races 8 of the bearings 6 and 7 and as these annulary recesses are slightly smaller than the diameter of the ball races 8 a force fit is provided for maintaining the ball races 8 in position in the respective annular' recesses in the sleeve et. The cone 10 of the bearing is positioned on' the shaft 5 by means of a drive iit ,andfin association with the ball bearings 6 and ball'race 8, rotatably supports Vthe shaft 5 of the" spool holder S at this point.' The cone 9 of the bearing 7 has screw threadedengagement with the Ythreaded end 12 of the shaft 5 and its connection with the threaded end 12 of the shaft 5 permits the cone 9 to be adjusted thereon in association with its ball bearings '7" and ball race 8 to prevent longitudinal movement of the shaft 5 in its bearings 6 and 7. Then the shaft 5 is adjusted to rotate freely a lock nut 13 having screw threaded engagement with the end 12 of the shaft- 5 locks the cone 9 in position to maintain this adjustment. The spool holder S which comprises the forward end of the shaft 5 is provided with a pair of annular reduced portions 15 and 15 and a sleeve 16 is provided which is secured to this forward end of the shaft 5'by mea-ns of a drive fit. VThe sleeve 16 is provided with a` plurality of longitudinal slots 16 and leaf springs 162 are pro vided the free ends of Vwhich are inserted in the slots 16 into the annular recesses formed by the annular reduced portions 15 and 15T on the shaft 5 and the inner circumferential face of the sleeve '16.5 The leaf springs 162 are bowedfand their length is slightly shorter than the distance between the shoulders formed by the reduced portions 15 and 15 on the shaft 5, so that lwhen a supply spool lV is slipped onjthe spool holder S the bowed springs 162 are. flexed inward and this space between the shoulders formed by the annular .reduced port-ions 15 -and 15 on the shaft 5-and the'ends ofthe leaf springs 162 will permit this flexing of rthe springs 162. .This flexing of the springs 16,2 places them under tension causes them to grip the supply'spool lV Yand `support the same thereon against movement as the spool WV rotates. n Y

The mechanism of my invention is; also provided with a combined clutch and tension Ydevice which will now be described. The

frame 2 is provided with a pair of integrals ly formed 'supporting brackets 17 and 17 which supporta portion of the tension device T. The adjustable tension device T comprises a toggle joint TJ. one arm of whichmis in the form of a U-shaped member 18 which rests between the brackets 17 and 17 and is pivotally supported on a pivot pin or shaft 19 which pivot pin or shaft 19 is in turn supported by the brackets 17 and cated ends 36 and 37 of the extension arm Y 24 ofthe yoke 25 are held in contact with the ball 22 by means of a screw 26 which has screw-threaded engagement with a suitable tapped orifice in the bifurcated end 36, whichris provided for this purpose. The rod 21 is also provided with a thumb member 27 which is for use in rotating the rod to adjust the same in relation to the yoke as will be more fully described hereinafter. The other end 28 of the rod 21 is threaded and has screw threaded engagement with a threaded orifice in a member 29 which is pivotally supported between the arms 30 and 31 of the U-shaped member 18 as willnow be described, and a locking member 100 having threaded engagement with the threaded end of the rod 21 is provided to lock the rod in its adjusted position. The arms 30 and 31 of the bifurcated portion of the Ll-shaped member 18 extend forward and support Vbetween them a pivot pin or shaft 32to which is secured al disk 35.

An 'arm 33'is provided` with a threaded end portion 38 .thatV has screw-threaded engagement with an orificev 39 in the disk 35 and securesthe rod 33 to the disk 35 and also serves asV a set screw to hold the disk 35 on the shaft 32., rfhe other end of the rod 33 supports a wheel et() which secured thereto in any suitable manner and serves as a guide for the traveling strand of wire 117 when the machineis in operation.

- The disk is provided with an integralli.v formed eccentric portion Ll1 in relation to the centralrorifiee hi2 of the disk 35 and of a size to enter the central oriice of the member 29 to which is secured one end 26 of the'rod 21. A disk le is also secured to the shaft stl by Ymeans of a suitable set screw and is concentrically secured to the shaft in relationrto the disk 35. rl"he shaft 32 sun- VYported bythe arms and 31 of the" U- shaped member 18 forms the pivot joint for llt) lil

` screw-threaded enY C y orifice 50 in the traine 2. n

provided with a reducedy endu'hich extends through oritices in the ends etti and 47 of ther Les-#,483

the arms of the toggle joint TJ'. one arm of y vvhichis the U-shaped member 18 and the other arin of Which is the rod 2l and itssupporting,r means Q2 and Q9, respectively supported on the ecceiitric portion di and the bitui'cated ends 36 and 37 oit the entension arn'i 24; A le'atlierstrip t5 is placed around the disk fl-l, the ends tti and Lt7 of which are placed in' an aperture t8 in the tranieQ and are held in place by a Screw Lli9 which has nement with a tapped The screw 49 is strip Lll5 and intoan aligned recess 5l provided in the traine Q thus securing the ends `it `and t7fot-the leatlierstrip in place.` fr

pin secured to the disk ist extends through the leather strip l5 or purposes as will ber described presently. The depending arin 53 ot the U-shaped member flS is provided With y a central orifice A rody 58 is provided which entends through the central orilice oi the depending arm 53 and is provided with an enlarged threaded portion upouiivliich the one end ot a spiral spring 57 threaded, A. stud 56 secured to an arm .integral with the traine 2 is provided ywith a threaded portion and receives the other ond of the spring 57. A member (30 having` a rounded end (Si is provided with a cei'itraloritice which permits it to be slipped over the end ot' kthe rod 555 rwhich protriules tl'irougifh the central or'il'ice Fili in the arni no ot' the U-shaped member 1S and its rounded end (il rests in a concave depression 52 o'l" the depending arm 52? to torina ball and socket joint betweenthe rounded end (il of the member GO and the depression G2 ot the depending arm The protrudingiv end oit' the rod 58 is thread ed and adapted to receive a thumb nut 623 which when threaded upon the rod 58 ttorccs the roundeifl' eind til ot vthe meinber'tt) into the depression (320il rthe depeiuilingl tongue and this'thiiiinli nut 6i., isft'or the purpose of adjusting; the tension oit the spring tor purper ,s as will be described presently,

I also provide a combined brake and clutch mechai'iisinBC 'which is controlled by the movement of the toggle joint. TJ and coniprises a brake dist y6st which is secured to the sha-tt obv means ot a drive tit/and a brake drum G5 which is cup shaped in tt'orm and is supported, by means ot a drive lit,y

upon an extension G6 of a collar 67 which is slidablv' supported upon the sleeve /l- A, ring G9 ot" suitable material such leather rests in the cup, portion ot the drum 65 and is secured/tothe drum 65 in any suitable manner With yits peripheral tace`69 engag-r infij thev inner peripheral i'zice 70 ot the f disk 64. y c y The collar 67iivl1ich is slidably supported upon themsleeve d hasa notch 93 throughy serted.

'tension' ot the springs has a pau-oil ori'lices 7l and 7 located kdiaineti'ically opposite Vinto which the ends of a pair oitl spiral springs 73 and 74 are in rlhe other ends ol? the springs are placed in orifices 91 andl 92 located in the `traine 2 Where are located plungers 75 and 7G oi a size to convei'iientlyY lit the orilices 91 and 92. "Gire end of each plunger is in contact with one end ot each spiral spring and the other end oit cach plunger 7 5 and 7 t5 projects beyond the li'anie 2 and comes in con tact with a thui'nb-nut 77 which has 'screw tlireaned engagement `with the threaded end tol the sleeve li. f

The thumb nut 77 may be turned in a: clockwise or counter-clockwise direction to increase ork decrease the tension yot the springs 73 and 7 4:. c When the thumb nut 77 is turned in a clockwise direction on the sleeve etwith'reiterence to Fig. 5 the plunger rods 75 and 76 are forced jin with relation to Fig. 3 against rthe tension ol the springs 7 3 kand 74: placingthein under greater comprescauses the leather ringl (39 ot the brake drum (35, which is secured to the collar 67, to grip the brake disk Gli tighter, as `will be more ilully hereinafter described. To decrease the 73 and 74 to permit the leather rino (i9 to pgrip the brake disk G43; lightly, a rotation ot the thumb nut 77 in a ycounterclfockivise direction will permit the pluijijrer rods 75 and 7G to be'torced out by the tension ofv the springs 73 and 7st.r This decreased `tension ot the springs 73 and 74 as is readil5T apparent Will permit the ring; 69 oit the brake `drum 65 yto engage the brake disk lightly.: f

The `voke 25 is ,pivotally' supported by pivot pins Sli and 85 which have la scrcvi7 threaded engagement with orifices in arms `,86 and 87 oit arinp,` men'iber ,88 that is tas tened tothe frame 2 bynieans ot a set screw.

`The pivot pins are held tast in their adjusted position by means oit' 'lock nuts 89 and 90 n which have screw?v threaded engagement `with said pivot pins 841 and 85.

c Suitable orilices are provided in the legs S2 and Utl iii)

of the yoke tor the entrance of the pivot r pins Slt and S5; The legis S2 and S?) of the Ayoke are also provided with oriticee ti() and 81 in which are inserted balibearings 78 and 79 which engage With'the face 1Q() et thedisk G'T'tor purposes afi will prf-osentl}7 be describedy 'y c c l have de cii'ibed, in detail the apparatus con'iprisii y ie mechanism ol my invention and now AI will describe, in detail, the op- `eration of tlielsame in connection with its operation;

Y bench or table'.

vFin'.

For the purpose ot illustrating and describing rnv invention l have shown the tension device operating in connection with a chuclrt'or Winding receiver coils but it is yto be understood that the 'tension device of my invention is applicable for l'other uses and may be used in conjunction with a machine ot the multiple type such as multiple finding; machine as described manv application tiled by me June 1922. Serial No.

"flie chuclr for holdin@ the coil 106 to be Wound beet any su yable t jpc such as illustrated in l? and is secured to a 109 Winch is mounted on a suitabl Winding wheel 110 secured to the eliatt i' open ,i associated with a `tric-tion ivliecllll nich 'is rotatablyv sup ported in bearings or s. arm 113 which pivot pin 114-. rllhe slilf a YpnllegY Wheel 115 which by ineaA vabletransmission. such a belt. .lrives the shaft 112 and a friction ivheel 111 secured thereto. Tl' 1 113 is connected to a suit` able starting toot pedal (not shown) which l when actuated rocks the arm 113 and itsparts as a whole and causes the Wheel 111 to enthe Wheel 110 on the shaft 1027. Due to the trictional engagement between the Wheels 110 and 111, the shat't 10T to which is attached the chucllll which holds the coilV 106 which is to be Wound starts to rotate. The spool ot Wire held upon thespool holder S has its ond threaded over the guide.

wheel Ll() and secured to a. terminal ot the coil 105 to be wound and the instant that the shaft 107 starts to rotate ivire is placed upon the core ot' the coil 106, which is to be Wound, and the operator noiv guides the strand ot' Wire 11T baci; and'forth to place the requisite number ot turns onthe coil.

rif'he instant that rotation is started, a tension is placed upon the Wire strand 117. The arm 33 is in the position .shown in kr S bet'ore the starting pedal is actuated and held in this position b v the spiral 'spring Pull or tension or, which is such as to torce the member (il). slit ably supported upon the rod 58, against the arm Due to this tension or pull*7 against the depending arm 553 of the loi-shaped member 18, the arnis of the toggle joint fill which are the Ushaped member 1S, and the adjustable rod 21,and its associated parts which are connected to the to le pivot are held in their raised position, the normal position ot the toggle pivot bei controlled by the piu 52 associationY with the leather strip L15, which rests on La portion ot the peripheral 'tace of Vthe dis'lrlil as before described. yThe instant thestarting pedal isV Y actuated, a tension or pull is placed upon ,2e supporting bracket the strand of Wire 117. This tension or pull is caused by the rotation of the shaft 10T. vThe tension `or pull on the strand of Wire 1? which as betore described rides over the uide Wheel secured to the arm causes e arm 33 to be moved downward due to pull or tension ot the strand of Wire vthat is attached to the core ot the coil lOiheld by tl e chuclr 105. rlhe arm 33 is secured to the disk member 35 and as the disk member 35 is secured to the shaft 32, the said shaft 82 is rotated in its bearings in the arms 30 and 31 of the iii-shaped member 18. The disk le which is also secured to the shatt isrotated and due to the pin 52 secured to the dish del and its connection with the leather belt e5 which rests upon a portion of the periohery of the dislr est and Whose ends L16 and are .secured to the traine 2, the pivotv pin 32 oi' the toggle joint d is forced doivnivarc. Due to this movement7 thearms 30 and 31 of the U- sliaped member 18 and the rod 21 which is connected to the pivot pin 32 by the nieni- 33 forces the `ends of the arms SO and 31 ciI the U-sliaped member 18 which are connected to the toggle pivotl pin 3:2 doivnivard thus causing the kU-shaped member 18 to rotate` as a ivhole, about its supporting shaft 19.

The arm extension 53 of the U-shaped member 18 is moved to the right, in reference to Fig. 1, and forces the membc,` and the rod 58 and itsr adjustable thumb screiv 63 to the right against the normal tension of the spiral spring 57, thus placing the spring 5'? under additional tension. The rod 21, which serves as the other arm ot the toggle joint TJ, due to its connection with the toggle pivot 32 is also forced downward and this movement of the rod 21 causes the integrally formed arm 24 of the yoke 25 to be moved to the lett due to its connection with the rod E21.V The movement of the arm 2 ot the volte 25 to the lett with reference to Fig. 1 causes the voire 25 to swing about. its pivot pins Elst and and the bearings .78 and T9 Which are located in orifices in the legs 82 and 83, oi the yoke 25 Which engage the face 120 of the collar 6T will cause the said collar 6T to move to the right on the sleeve 11 against the tension of the spiral springs 73 and 74. This movementV ot the collar 6T causes the brake drum 65 which is secured to the collar 67, to move to the right and partially disengag'esthe band G9 from contact with the disk 64 which removes Ysomo of the drag from the spoolholder S to permit the spoolholder S and the spool ot' wire V] as a Whole to rotate more freely to possible. f f f The `member Y2.9, into which lone end of the rod 21 isgthreaded, pirotally supported oIzl the ,eccentric eXtension'el-l. of the disk 35 to 0" 'e an additional movement as willnoiv be the arr-i Sii 's its downward travel, `the disk lo is rotated as inst described causing the toggle joint TJ to move in a downward direction'. And, asthe disk is rot-ated theyeocentric lextension 41 is also rotated and due toits eccentric. posi-y aes the :member apport/ed kon this the Adisk 3 5 to be tion on `the shaft ca 2t) ivhich'is pirotaiily eccentric portion 41 ,of

moved to the left in addition vto its normal /niorenient caused by the downward ,movenient `of the toggle pivot and asthe rod LZ1-is threaded to this member Q9 y,the rod 21 yis also inoiedto the left yin addition to its steady doii'nivard movement causedjby the doii'nirard movement of the toggle ypin 32 for purposes will non7 be described. n

o ch es are used rin receiver' and transformer coils, and especially those used in kconnection with radio receiving sets are wound with a very fine Wire to yobtain a lhigh olimic resistance. VYlien the machine upon which these coils are Wound, isstarted a sudyden strain placedfon the tine wire and, if `means yare not provided to equalize this` strain, `the Wire will snap. lVith the tension.

m arsof my invention the instant thestarting pedal is actuated a tension or pull vis,

placed upon the strand 117. This is caused .by the starting of the machine and as the strand sti 'ts to unwind fromthe spool lV.

the spool lV and its wire ivhichis supported hy the spoolholder S is dead yWeight all the strain, in starting theholder S and its siipi'iorterl spool of wire rotating as a whole', is `placed on the'liner strand of Wire. `The arm `in its downward movement causes the toggle joint TJ to 'function in `a steady` even movement to cause the `voke 25`r to swing about its pivot pins 84C and 85.` The instant this movement takes place the eccentric portionfl of the rdisk 85 also acts and gives the rod Q1 of the toggle joint TJan cnil ,to be Wound starts, to rotate `the Wirer lditional thrust causing the voke Q5 to in,-y

`parts roperate to automatically regulate the tensionof the strandfof wire 11,7. It sometimeshappens that the' Wire upon `the supplyepool lV is crossed for a few turns yand causes a lsudden pull upon the stra-nd toggle joint TJ to function. Thedownvvard moven'int of the toggle joint TJ rcauses the rod-21 lto be forced to the left, with the additional `thrust brought about by the .eccentric t1 as before described, and causes Athe ytongue extension ,53 to be rmoved to the right to place the spring 57 'under a greater tension; This movement of the rod 21 causes the yoke 25 to rinstantly rotate about its pivot pins 841 and 85 to force the collar 67 and the ,brakel drum fastened on the extension 66' of the collar 67 to the right `to permit the r-spoolliolder S to run entire-ly free to release the ,strain Yplaced on the strand 117 being fed to the coil 10G being Wound. Now when this added strain or pull `has stopped, due to the tongue exto ion 53 to the left thus causing the Urshaped member 18 to rotate, on tits pivot pin 191, and move its integrally formed arms and 31 upward and by means of the spring 57 and leather belt 45 in combination with the toggle joint TJ the yoke 25 is rotated about its pivot pins Sei and and in ,combination with the disk 67 and the spiral springs .73 and 74 forces the friction ring G9 ofthe brake ldrum 65 against the face 70 of the brake Adisk 64 to -a gain check tliespeed of the spool holder S so as to again permit the proper [tension to be placed upon the ystrand yof wire 117 that is being fed to the coil` 106 which is being Wound.

, Should the strand of wire 117 break, as it will `do if 'the supply at lV is tangled, the arm is instantly moved to its extremo doivn position against the' tension ofthe spring 57. Then when the wire strand 117 snaps, the spring 57 forces the arm ,33 back `to its normal position as before described yand as the spring 57 yis under added tension,

diiey to the movement of the arm 33, the said arm 33 is moved back with considerable force. To cheekrtlie blow of vthe vtoggle 'joint TJ and its associated parts when they are the crossed windings having been removed f vduring the Winding operation, the tension @oft the springr is powerful enough to pull i rotate in the opposite direction to force the pivot pin 32 of the toggle joint TJ downward, againplacing added tension on the spring 57. The spring 57, in this instant, absorbs thel blow of the returning toggle joint TJ and its supported partsand acts as a buiten `With this arrangement I may dispense with a liXed stop as the belt 45 in combination with the snrino 57 will alwavs tend il, L,

'sil

to hold the arm 33 in its normal position.

`The rocking arm 33 and its guide wheel 40 constitutes a lightrooking element freelyy movable in one direction under the intluence of the tension exerted by the loop of wire trom the supply to the coil being wound, when the machine is started; and as freely movable inan upward direction under the iniuence of the spring 57 which opposes the pull of the loop ot wire. The arm 33 will move upward as the tension of the strand of Ywire '117 between the supply and the winding point decreases and will move downward, asY the tension on the strand ot wire 117 increases between the supply and the point oi `vwinding, to overcome the power exerted by the spring 57 which tends to hold the arm 33 in its normal position.` Through `the medium of the Amovable arin'33'which is under an adjustable spring tension `infcombination with a brake drum 65r and a disk 64 which is automatically engaged and disengagedthe instant the arm 33 moves up or rdown through the agency of theyoke 25 and the collar 67 which is always under spring tension, the tension of the strand of wire be- Y ing fed to a coil may be maintained approximately constant at all times.

The thumb nut 63 on the threaded end of be, and being secured to the rod 2l, this arm y ofthe toggle joint TJ may be lengthened or shortened in which case the nut 27 is turnedV to the right to thread the threaded end 28 ot the rod 2i further into the orifice provided in the member 29. its this arm of the toggle joint is shortened, the yoke 25 is moved about its pivot pins 34 and 85, causing the bearings 7 S and 79 in theoritices 8O and 3l of the legs S2 and S3y of the yoke 25 to move away from the disk 67, so that the toggle pivot 32 moves downward a considerable distance before the bearings 78 and 79, in the orices 80 and 8l kof the legs 82and 83 ot' the yoke 25, engage the disk 67 to move the brake drum 65 away 'from the brake disk 64. This adjustment is used for the coarser gauges or' wire. lVhen the thumb nut 27 is turned to the lett, the rod 2l is lengthened and this being the case the yoke 25 is kmoved about its pivot pins 84 and 85 to move the bearings 7 8 and 79 against the disk 67 so that the toggle pivot 32 moves only a little way in a downward direction to cause the brake drum 65 to move away trom the brake disk 64, through the agency of the legs S2 and ot the yoke 25. This adjustment of rod 2l is used torthe finer gauges of wire. The adjustment ot rod 2l is maintained, 'in any ot its positions, by they lock nut 100.

he thumb-nut 77 located on the threaded end 78 or' the sleeve 4, may be turned to ad* just the tension o ie the spiral springs 73 and 74. It' the thumb-nut 77 is turned in a clockwise direction so as to place it farther on the Vsleeve 4, with reference to Fig. l, the plunger rods 75 and '76 are moved toward the lett with i'eferencevto Fig. 3 and as the springs Y73 and 74 rest between the collar 67 and the wire the more tension will be exerted on the traveling strand ot wire and the increased Vtension on the spiral springs 73 and 74 will tend-to make itmore difiicult for the disk 67 tobe moved against the tension ot the spiral Asprings 73 and 74 andthus more power will liaveto be exerted by the traveling strand oi wire before the toggle joint will move downward to disengage the bra re drum 65 from the brake disk 64 through the associationrot the arm 2l, yoke 25, bearings 73 and 79, disk 67, extension 66 ot disk 67; Tt the thumb-nut 77 is turned in a counterclockwise direction to move it to the right, reterringto F ig. l the tension on the spiral springs 73and 74 will torce the plunger rods 7 5 and 76 outward with reference to Fig. 3 and the extension of the springs 73 and 74 willdiminish thus making it easier for the disk67, actuated by the bearings 78 and 79, yoke25, arm 2l and the toggle joint TJ to inojfe against the tension of rthe springs 73 and 74 consequently a slight pull of the strand of wire 117 will move the arm 33 downward and will thus release the friction band 69 :from engagement with. the brake disk 64, by means ot the toggle joint TJ, arm 2l, yoke 25, bearing78 and 79, .disk 67 and brake drum 65. This adjustment is used tor the ner gauge wire. The tension of the spiral springs 73 and 74 is suilicient to hold the thumb-nut 77 in any of its adjusted positions. F rom the foregoing it will be seen that the device ot my invention has two sets of springs, the tension of which may be adjusted to allow tor the difference in tension be used with ,this device. This dual adjustnient oit spring tension makes it unnecessary to replace the springs with other springs ot a di'l'lierciit tension when a different gauge 'Wire is to be wound. The adjustablespring tension and the adjustable. thumb-nut 27 for adjusting` tliekthrow oil the legs of the yoke in relation to the disk 67 make it kclear that a very line adjustment maybe obtained so that just the right tension may be maintained on the strand of Wire. f The adjustment oi arm 2l regulates at What point `in the travel ot arm 32) the friction Will be relieyed on the rotating drum. rThat is the arm 2l. may be adjusted so that the 'friction will be reliered `as soon astlie arm 23 is pulled partly down or not until ata later point in its travel. f

The location ot tlie'bearings Gand 8 is also a noteworthy feature. The ball bearings/t and 7 are entirely enclosed and are so placed that any dirt which may be on the spool ot' wire W when it is placed yen the spool. .holder S cannot get into the ball race kand prevent tliebearings trom functioning properly. y

lVliile I have illustrated and described a j'ireierred embodiment of my invention, it" is to be understoodthat changes and modifica tions will readily suggest themselves to those' skilled in the ai't,\and I, therefore, aim to cover all such changes and modifications a." come Within the spirit andscope of the appended claims. f y f n lllhat i claim as new and desire to secure by United States Letters Patent is:

l. In a Winding machine, ot `the character described, includinibv` a rotatable spool holder y and a source ot Wire supply, a winding manr drel, a piyoted rocking element 4having a toand-tro movement, a `tougie joint supportsaid rocking element, plurality ot springs provided With adjustable tensioning' means, and means controlled by the tension on the strand oit Wire between the said Wire ysu. l and the said 'Windino` mandrel for l) lo actuating said' piVotefl-roclni r element to operate said lopffle to control said rotatable drel, a toggle joint associated with said reels ing' element, and spring means associatetl therewith ior maintaininga saidy rocking` elen ment at rest, brake means for said rotatable o spool holder, and means including a pair ot riectifm by the iiilluence adjustable tension springs between the said f toggle joint and said brake means tor main- .taining` a substantially constantI tension on the said strand ot' wire between the source ot Wire supply'and the Winding,l` mandrel. n 3. A Winding machine oit the character described including` a Windingmandrel and a source of Wire supply; a rotatable holder tor said Wire supply; a pivoted rocking,l arm, a

guide Wheel therefor; a toggle joint that supports said piyoted rocking arm; brel-:e means associated Witlisaid toggle joint, said rocking arm moved by means ot the strand ot Wire ,passing over, said guide Wheel on said rrockinr armk to cause movement of said toggle joint yto actuate said brake means, spring `means associated with said toggle ljoint and a pair ot adjustable springs associated "with said brake means, maintaining a. substantially constantl tension rupon the strand'ol Wire between the said Winding mandrel and said source oit supply.

l d. In a Winding machine ot'y the character `described including` a Winding mandrel and a source oitfrwirc supply, a rotatable holder `tor the said source ot wire supply; a toggle joint and a rocking element su pportcd thereby, guiding means associated with said rocking elementg ya plurality `oit adjustable springs provided with means :tor adjusting; the tension on said springs, one oil said springs holding said rocking;` arm and said toggle joint in a. position oit rest; braking;` means for controlling the rotation ot the ro tatable spool holder; and means actuated when said rocking" arm is moved in one di*` ot the tension the strand ot Wire between the source oit supply and the Winding` mandrel to actuate the said brakemeans against the tension ot said pair oit springs oit said plurality olf spriifugs to permit the tree rotation et the said rotatable'spool-holder.

l5.y In a n" iding machine ot the character described including,` a ysource oi" supply ol' wire and a Winding' mandrel, a rotatabley kholder, "tor supporting the said sourcepol wiresupply, a toggle joint, and a spring- 'tor holding said togglejoint in a position ot rest,y a rocking` arm supported on said toggle joint and a `guide wheel tor said rocking.;-

arm, oyer which the strand oil Wire travels from the source oil supply to the Winding' mandrel, braking means and a pair of springs associated with said bralriiigg` means, means functioning' when the rocking; arm moves inone direction to nieve the'said tol- ;jle joint against the tension ot its associated,

spring and said `pair oi springs to operate the said brake means to permit the tree roto,- tion of Lsaid rotatable holder, saidsprine's moving said'toggle joint in the opposite direction when the tension or pull of the trai/2 cling strand o'l `n'ire is such as to permit said toggle joint and its associated parts to iscy rdrol,V a

strand ot the souice of supp-ljv betiveen thev saidisource ot supplj,- and the Winding manbelt passingrover seid toggle joint, braking means in association with said tog gle'joint, said belt aero' acted upon b v the ocking arm the tension tor adjusta moves in one direction5 aga ne ot a. plurality ot' springs, means ing the tension of sad u d means 'ter ii'iovinel said strand ot Wire to cause said rocking arm to move in said one direction and through the agencgY ot said belt cause Ysaid toggle joint to actu-ate and operate said brake means to maintain a substantially constant tension in said strand between the Winding point and tbe suppl;v point.

r" Winding machine ot the character i described comprising a train-ma source of supply and a winding inandreha rotatable holder 'toi' the said source ot supply; a toggle joint including a pair Vot arms, a disk secured tos-aid toggle joint supporting an arm and an eccentric integrally tornio-d with sait disk carrying one arni said toggle joint, a. second disk secured to said toggle joint, a belt supported on `aid second disk, the ends of said belty being secured to said "1 'ng ineans connected to said one naine, braki j ot toggle joint, a plura itjy of adjustable springs associated with said toggle joint and said braking means, said belt being acted upon when Vsaid arm on said first disk moves in one direc n against the tension of a plurality ot si iig-s, and under the intluence of tension on said strand to move said toggle joint, eccentric integrally formed with said tirst disk acting upon said one arm to give said one arm an additional tlirust in combination 'With Vthe movement ci said one arm due to the moi-ement ot said toggle joint to actuate the said braking means iii ass ciatioii with i pair ot springs, the tension of ivliicli is adjustable by means of a thumb nut.

S. ln a Winding machine ot' the character described including a mounting trame, a. sleeve member secured to said trame, a source ot Wire supply and a winding mandrel7 a spool holder rotatabljY supported in vsaid sleeve for supporting said source of Wire supply, brake means including a. disk secured to said spool holder and a brake drinn .slidably supported on said sleeve, a pair "oi springs supported said trame normally maintaining said drum in engagement with said disk, a toggle joint supported by said 'traine and a rocking arm secured thereto,

guide means on said arm7 a spring for iiiaiii- 9. ln a Winding machine ot the character described including a. mounting tran e, a

sleeve member secured to said trame` a source of wire supplj'w and a Winding inandrel, spool holder rotatablj7 supported in said sleeve for supporting said source ot supply, artoggle joint supported by said traine and an arm secured thereto, guide means on said arm, brake means including a diskisecured to said spool holder and a brake drinn slidablf.7 supported on said sleeve'. a spring associated with said toggle ior maintaining said toggle at rest, a pair oit spriiigs sujiported in said trame tor maintaining said drum in engagen'ient with said disk, a :yoke connecting said brake means with said toggle, said arm moving in one direction under the tension ot a strand traveling over said guide means between said Wire supplj7 and said mandrel to move said toggle to actuate said volte to slide said drum on said sleeve against the tension ot' said aair ot springs to permit tree rotation ot said spool holder.

l0. in a Winding machine ot' the described incli'iding ka mounting trame a sleeve member secured to said traineg a source o'f Wire supply and a Winding mandrel7 a. spool holder rotatablyv supported on said sleeve tor supporting said source ot' ivire supply, brake means including a disk secured to said spool holder and a brake drinn slidablff supported on said sleere` a pair ot' springs supported j; said trame norsally maintaining said drum in engagement rvith said disk,r a toggle joint supportu ed by said traine and a rocking im secured tlieretmguide means on said arm, a spring tor maintaining said toggle normally at rest, said a 1in moving in one direction under the tension ot' a strand trai-'cling over said guide means between said ivire suppl)v7 and said mandrel to move said tog/le to actuate means to slide said drum on .said sleeve against the tension oi' said s ring and said pair oit springs to permit the tree rotation ot said spool boitier, and adjustable means `for said spring and said pair ot .springs for regulating the period at which movement ot said toggle begins under the tension of said cnaracter traveling strand.

1l. A tension device of the character described including a. mounting frame, a ro' "tatable shaft extending through said frame and having bearings at the oppositeends thereof, a disk secured yto said shaft intermediate of its ends, means on the free end of said shaft for supporting a supply spool, a guiding device supported by said frame, a spring for holding ,said devicein normal position, means for adjusting the active tension of said spring, a slidable braking device supported by said frame and adapted to engage said disk to regulate the speed of rotation of said shaft, spring means acting on said braking device, and means for adjusting the tension of said last spi-ing means. j f

12. A tension device ofthe character described including a supporting' member, a spool supporting .shaft having'bearingsin said supporting member, a'` disksecured to said shaft, a guiding devicefor supplying materia] from a spool on said shaft to a Winding mandrel, adjustable spring means acting on said guiding device, a slidable braking device acting upon said disk for regulating the speedy of rotation of said shaft, adjustable spring'means operating ony said briiking device, and mechanism controlled by said guiding device for controlling said braking device. n f

13. A tension device of the character de" scribed includingl a, supporting member, ay

spool supporting shaft having bearings held by said supporting member, a disk secured t0 said shaft, a guiding member attached to said supporting member and adapted to have a to and fro movement, adjustabler springr means holding said guiding member-in its normal position, a slidable braking device cooperating with the .said disk for regulatingy the speed of rotation of said shafta :ljust`k able spring means acting on said braking means, and means for regulating the point in the path of travel of said guiding means Where` it becomes effective upon'said braking means. f y n 14. A tension device of the character described including asupporting member, ay sleeve extending through said member, a rotary shaft supported in said sleeve anda disk secured tosaid shaft, a braking'de-` vice slidablv supported on .said sleeve andr engaging said disk for regulating the speed of rotation of said shaft, and adjustable spring means operating on said braking desk vice. f

15. A device of the character described, including a supporting member, a sleeve extending through said supporting member, a rotary .shaft extending through said sleeve and having bearings in the opposite ends thereof, a disk secured onsaid shaft, a brak# ing-device slide-bly supportedbysaid sleeve said rotary shaft to regulate the speed of rotation of saidshaft. y

16. A device of the character described including a'supporting member, a sleeve eX- tending through said supporting member, a rotary shaft'extending through said sleeve and having bearings in the opposite end thereof, a disk secured on said shaft, a braking device slidably supported by said sleever member and operative upon the said' disk on said rot-ary shaft, and adjustable spring means operating'on said braking device.

17. yA device of the character described including a rotatable shaft, a disk secured tosaid shaft, a slidable braking device cooperating with said disk for controlling the speed of rotation of said shaft, adjustable springmeans `operable on said braking de-y vice.- a rotatable control device operative on said braking device, adjustable spring means for said control device, and means for adjusting the point in the travel'of said control device Where it Will operatively control said braking device. f

18. A device of the character described including a supporting member, a shaft eX- tending through said supporting member and having bearings to rotatably support the same,'a disc secured to said rotatable shaft, a braking device slidably ysupported by said supporting member and operative upon the said disc supported by said shaft, an actuating device for'controlling said braking de'- vice, and spring means operative upon said actuating device. f

19. A device of the character described includinga supporting member, a shaft ro? tatably supported by said supporting member, a brakingfdisc securedto said shaft, a braking device supported by said ksupporting member in operative relation with said disc to control the speed of rotation of said y shaft, yadjustable spring means operating on said braking device, a control device for actuating said braking device, and spring means operating on said control device.,

20. A `device of the character described including a supporting member, a shaft r0- tatably supported by said supporting member, a braking disc secured to said rotatable shaft, a slidable braking device cooperating With said disc and supported by said supporting member for controlling the speed of rotation of said shaft, adjustable spring tensioning" means operable on said braking device, a rotatable control device operating on said braking device, and adjustable tensioning meansfor said control device.

`Signed by me at Chicago, in the county of Cooln'and State of Illinois, this 3rd day of 

